<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    div {
        float: left;
        margin: 10px;
    }

    .one {
        width: 100px;
        height: 100px;
        background-color: #E7E7E7;
        border-radius: 10%;
        box-shadow: 0 5px 0 #D7D7D7;
        display: flex;
        align-items: center;
    }

    .block1 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        margin: 0 auto;
    }

    .two {
        width: 100px;
        height: 100px;
        background-color: #E7E7E7;
        border-radius: 10%;
        box-shadow: 0 5px 0 #D7D7D7;
    }

    .block2 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
    }

    .block3 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 70px 70px;
    }

    .three {
        width: 100px;
        height: 100px;
        background-color: #E7E7E7;
        border-radius: 10%;
        box-shadow: 0 5px 0 #D7D7D7;
        display: flex;
        align-items: flex-start;
    }

    .block4 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 40px 40px;
    }

    .block5 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 10px 70px;

    }

    .block6 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 70px 10px;
    }

    .block7 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 40px 40px;
    }
    .block8 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 40px 10px;
    }
    .block9 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 40px 70px;
    }
    .block10 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 10px 40px;
    }
    .block11 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 40px 40px;
    }
    .block12 {
        width: 20px;
        height: 20px;
        background-color: #333;
        border-radius: 50%;
        box-shadow: 0 2.5px 0 gray;
        position: absolute;
        margin: 70px 40px;
    }
</style>

<body>
    <div class="one">
        <div class="block1"></div>
    </div>
    <div class="two">
        <div class="block2"></div>
        <div class="block3"></div>
    </div>
    <div class="three">
        <div class="block2"></div>
        <div class="block3"></div>
        <div class="block4"></div>
    </div>
    <div class="three">
        <div class="block2"></div>
        <div class="block3"></div>
        <div class="block5"></div>
        <div class="block6"></div>
    </div>
    <div class="three">
        <div class="block2"></div>
        <div class="block3"></div>
        <div class="block5"></div>
        <div class="block6"></div>
        <div class="block7"></div>
    </div>
    <div class="three">
        <div class="block2"></div>
        <div class="block3"></div>
        <div class="block5"></div>
        <div class="block6"></div>
        <div class="block8"></div>
        <div class="block9"></div>
    </div>
    <div class="three">
        <div class="block2"></div>
        <div class="block3"></div>
        <div class="block5"></div>
        <div class="block6"></div>
        <div class="block8"></div>
        <div class="block9"></div>
        <div class="block10"></div>
        <div class="block11"></div>
        <div class="block12"></div>

    </div>
</body>

</html>